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A magnetic fabric study of Late Whitcliffian (U. Silurian) siltstones from the Welsh Borderland
Author(s) -
Bailey R. J.,
Rees A. I.
Publication year - 1973
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.3350080201
Subject(s) - geology , facies , paleontology , littoral zone , sedimentation , structural basin , sedimentary depositional environment , paleozoic , sediment , oceanography
The uppermost Whitcliffian strata of the Welsh Borderlands record the final phase of marine sedimentation in the Silurian basin and shelf environments. They give way transitionally to the succeeding non‐marine Lower Old Red Sandstone. As a contribution to the understanding of the change from marine to continental facies, the magnetic fabric method was used to obtain palaeocurrent data for the uppermost Whitcliffian. The results confirm that the uppermost Whitcliffian palaeocurrent pattern is essentially “Silurian” in character and does not foreshadow the deltaic and littoral patterns of sediment distribution observed in the basal Old Red Sandstone.